[ALSA] Fix schedule_timeout usage

Use schedule_timeout_{,un}interruptible() instead of
set_current_state()/schedule_timeout() to reduce kernel size.  Also use
human-time conversion functions instead of hard-coded division to avoid
rounding issues.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 15 deletions

diff --git a/sound/isa/sscape.c b/sound/isa/sscape.c
index 1036876146c4..11588067fa4f 100644
--- a/sound/isa/sscape.c
+++ b/sound/isa/sscape.c
@@ -343,19 +343,6 @@ static void soundscape_free(snd_card_t * c)
 }
 
 /*
- * Put this process into an idle wait-state for a certain number
- * of "jiffies". The process can almost certainly be rescheduled
- * while we're waiting, and so we must NOT be holding any spinlocks
- * when we call this function. If we are then we risk DEADLOCK in
- * SMP (Ha!) or pre-emptible kernels.
- */
-static inline void sleep(long jiffs, int state)
-{
-        set_current_state(state);
-        schedule_timeout(jiffs);
-}
-
-/*
  * Tell the SoundScape to begin a DMA tranfer using the given channel.
  * All locking issues are left to the caller.
  */
@@ -392,7 +379,7 @@ static int obp_startup_ack(struct soundscape *s, unsigned timeout)
                 unsigned long flags;
                 unsigned char x;
 
-                sleep(1, TASK_INTERRUPTIBLE);
+                schedule_timeout_interruptible(1);
 
                 spin_lock_irqsave(&s->lock, flags);
                 x = inb(HOST_DATA_IO(s->io_base));
@@ -419,7 +406,7 @@ static int host_startup_ack(struct soundscape *s, unsigned timeout)
                 unsigned long flags;
                 unsigned char x;
 
-                sleep(1, TASK_INTERRUPTIBLE);
+                schedule_timeout_interruptible(1);
 
                 spin_lock_irqsave(&s->lock, flags);
                 x = inb(HOST_DATA_IO(s->io_base));